US944290A

US944290A - Wood-barking apparatus.

Info

Publication number: US944290A
Application number: US42551508A
Authority: US
Inventors: George Spaak
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-04-06
Filing date: 1908-04-06
Publication date: 1909-12-28
Anticipated expiration: 1926-12-28

Description

G. SPAAK.. I WOOD BARKING APPARATUS. APPLICATION FILED APR. 6, 1908.

944,290, Patented De0.28, 1909.

4 SHEETS-SHEET 1.

G. SPAAK. WOOD BARKING APPARATUS.

APPLICATION FILED APR. 6, 190B.

Patented Dec. 28, 1909.

4 SHEETS-SHEET 2.

G. SPAAK.

WOOD BARKING APPARATUS.

APPLIOATION FILED APR. 6, 1908.

Patented Dec. 28,1909.

4 SHEETS-SHEET 3.

G. SPAAK.

. WOOD BARKING APPARATUS.

APPLICATION FILED APR. 6, 1908.

Patented Dec. 28, 1909.

4 SHEETS-SQEET 4.

GEORGE SPAAK, OF BERGVIlK, SWEDEN.

WOOD-BARKING APPARATUS.

Specification of Letters Patent.

Patented Dec. 28, 1909.

Application filed April 6, 1908. Serial No. 425,515.

To all whom it may concern:

Be it known that I, GEORGE SPAAK, a subject of the King of Sweden, and resident of Bergvik, in the Kingdom of Sweden, have invented certain new and useful Improvements in Wood-Barking Apparatus, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to a machine for barking timber and more especially to the barking of timber employed in the manufacture of pa er.

In the mac line comprising this invention the barking of the timber 1s effected by a series of cutters,'all of which are stationar relatively to the log or timber which 1s caused to move through the apparatus by suitable means employed for this purpose.

In carrying out the invention, the cutters are preferably mounted at the same distance from each other around a circular space through which the logs are caused to pass. The said cutters are mounted u on shafts which are adjustable longitudinal y and also capable of moving with a pendulum-like motion so that the positions of the cutters may be varied automatically by the size of the log passing through the apparatus; this automatic action being re ulated by the adjustability of the devlces or receiving, supporting and feeding the logs, as will be hereinafter more particularly described.

In the accompanying drawings, Figure 1 is an end elevation and partial section of the apparatus embodying my present invention. Fig. 2 is a side elevation. Fig. 3 is a plan. Fig. 4 is a longitudinal section on an enlarged scale of the bearings for the cutter shaft. Fig. 5 is a side elevation and partial section of the parts employed to adjust the tension and determine the osition of the cutter members. Figs. 6 an 7 respectively are a plan and side elevation of the same. Fig. 8 is a section through the disks c a. Fig. 9 is a central vertical section taken through the hollow arm 3. Fi 10 is a central longitudinal section taken throughthe hollow shaft 4 and Fig. 11 is atransverse section taken through the revoluble disks 3 and associated parts.

Referring particularly to the drawing, the

parts of the apparatus employed for receiving, supporting and feeding the log during the barking operation preferably comprise a plurality of pairs of conical, fluted disks indicated at 1, 1, the sides of smaller diameter, each of which is arranged to abut'against the outer surface of the hollow arm 3 1n whicheach pair of disks 1 is mounted upon,

is supported by the bearings 6 provided in the uprights 7 of the frame of the apparatus.

Through each of the hollow shafts 4 there extends a shaft 8 which also 1passes through the trunnions 5 and is journa ed therein. A chain gear a is em loyedwithin each of the hollow shafts 4 an each chain a passes over a chain-wheel b on the shaft 8 and a similar chain-wheel c on the shaft 2 within the hollow arm 3, and by means of which the shaft 2 and disks 1 thereon are revolved from the shaft 8 and which latter is turned by any suitable motor.

As will be apparent from Fig. 2, the hollow shafts 4 are mounted one above the other in pairs at opposite ends of the apparatus and the disks 1 in pairs are correspondingly arranged to lie one above the other, and connected to the hollow shafts 4 are segmental gears indicated at 9; the gear 9 on one shaft 4 meshing with the segmental gear 9 on the other hollow shaft 4 of each pair of hollow shafts so that the hollow arm 3 and the disks.

l of each pair will always maintain a like distance from the center of the log passing through the apparatus It will be understood that the shafts 8 may be driven as hereinbefore stated by any suitable mechanism, the speed of which may be varied to meet the requirements of the speed that it is desired to impart to the log in passing throughthe apparatus. 1 I also employ a plurality of cutters indicated at 10 and each of which is provided with a series of teeth indicated at d; it being understood however, that the particular form of cutter comprises nofeature of my present invention inasmuch as any desired type of cutter may be employed. Preferably there is a series of cutters arranged on both sides of the main frame 17 of the apparatus, the cuttters of each of these series being mounted as hereinafter described, to assume a circular relationship in order that the entire sur-v face of the log may be operated upon, and v the alternate cutters in each series thereof are preferably arranged in different planes so as to bring the cutters as closely to ether as possible. Each cutter 10 is secure to a shaft 11 which latter is journaled in a sleeve 12 connected to the outer end of which is an electric or other motor indicated diagrammatically at 13. The sleeve 12 is mounted in any suitable guide preferably a'sleeve indicated at 14, and the sleeve 14 is provided in a suitable position with trunnions 15 adapted to fit into bearings 16 secured in the main frame 17 so that the cutter shaft may be turned or oscillated upon the trunnions 15 with a movement similar to that of a pendulum. Each sleeve 12 is made adjustable relatively to the bearing 16 at a point 20 by means of a sprin -link 19 :which may be moved longitudina ly to determine the position of the sleeve 12 and consequently that of the shaft 11, and this spring-link member 19 may be secured in the position in which it is set by means of the screw-bolts e or otherwise. i

' As will be apparent particularly from Fig. 4 of the drawing, each cutter together with its shaft, the

sleeves

12 and 14, the motor for turning the shaft 11 and the s ring- I link 19 form a unitary structure whic may be termed a barker member. I r

a The main frame 17 preferably has the shape of a wide ring which is U-shaped in cross section, with the opening between the members of the U-shaped frame facing the center of the rin Now in the barking operation, the 10 is fed through the ring by the disks '1 an the bark is removed by the cutter members, each set of which is divided into two planes as hereinbefore indicated and as shown in Fig. 2, so that the cutters may be located as closely as possible to each other when the log to be operated upon is of a small diameter.

As hereinbefore stated, each cutter member may be oscillated on the trunnions 15 and moved longitudinally by sliding the sleeve 12 within the sleeve 14. The length 'of the sliding movement or longitudinal adjustment is evidently dependent upon the distance between the connecting point of the spring-link 19 with the sleeve 12 and the point 20, which distance must be so adjusted that the medium rotary plane of the cutter for all positions of the same, passes approximately through the center line of the log; this feature being of special importance in reducing the loss of wood to a minimum during the barking operation.

On each side ofthe main frame 17 I employ a rotatable ring. These rings are inicated respectively at 21 22, and are pref erably concentric with the frame and supported upon rollers 17 which latter are mounted 1n the said frame, and on each of the said rings is provided an arm 23 24 re-' is adapted to pass into and operate within a slot in the extremity of the central arm 29 of a three-armed lever; the other -arms 30 of which lever are connected respectively with the hollow shafts 4 4 at the opposite ends of the apparatus by links 31 and the arms 32, which latter extend upwardly from the said holloyv shafts 4. i

For the sake of clearness the parts indicated by 27 to 32 inclusive, are illustrated on an enlarged scale in Figs. 5, 6 and 7. The lever whose arms are 'ndicatedby 29 and 30 is pivotally connected to the frame 17 as indicated at 28, and the'rings 21 22 are yieldingly connected by coil springs 27 with the spring-links 19 of each of the barker 35 members so that by the said ring and lever mechanism, all the cutters. are substantially

tubes

35 and 36 by the action of the said fan.

For the sake of clearness but one cutter has been shown in Fig. 1 and but one of each series of cutters hasbeen shown in Fig. 2.

The essential feature of the invention it is believed will be fully understood from the drawing and description without further 1 illustration; the essential feature consisting in the peculiar position in which the cutter shafts are placed with relation to the log in passing through the apparatus and in the possibility of moving the cutters and their shafts longitudinally and at the same time'- transversely of the log to automatically adjust the same to the different sized logs. 7

In the operation of the hereinbefore described wood-barking apparatus, the logs from which the bark is to be removed are first "passed into the machine between the fluted disks indicated at 1 which latter by the construction hereinbefore described, are automatically adjusted to the required posi-- tion to bear against the opposite surfaces of the log, whereupon the shafts 8 are turned by any suitable power to drive the disks 1 by means of the chain-gears a. Likewise the motors 13 are started, which as will be understood, revolvethe cutting tools which are automatically maintained against the positions required for 115 dled by the blower ap 1' by the surface of the log intermediate of the disks construction as hereinbefore described. The cutting tools are of such a nature and are so arranged as to extend entirely around the log, thereby removing substantially all the bark therefrom which is chopped up into comparatively small particles, so small in fact as to be readily hanaratu which draws the chi )s of bark from icneath the frame 17 througi the diverging tubes 37 to the common discharge tube 36, thence. away to any suitable place of deposit.

I claim as my invention:

1. In a wood-barking machine and in combination, a frame, a plurality of cutters, a

shaft upon which. each cutter is mounted, means whereby each cutter shaft is so mounted in the said frame as to be longitudinally adjustable and movable transversely of the path of a log to be barked, and means for receiving, supporting and feeding a log durin the arkin o eration.-

2. fit a wood-bar ing machine and in combination, a frame, a plurality of circularly disposed cutters, a shaft for each cutter, means for rotating each cutter shaft, means whereby each cutter shaft is so mounted in the said frame as to be longitudinally adjustable and movable transversely of the path of a log in the machine, and means for receiving, supporting and feeding a log through the machine.

3. In a wood-bark ng machine and in combination, a frame, means for receiving, supporting and feeding a log to be barke a plurality of cutters circularly disposed around the periphery of the log, a shaft for each cutter, a sleeve in which the said shaft is journaled, a second sleeve in which the aforesaid sleeve is longitudinally adjustable and means whereby the said second sleeve is pivotally mounted in the said frame so that the cutter shaft and cutter may swing toward .=-and away from the log in the barking operation.

4. In ,a wood-barking machine and in combination, a frame, means for receiving, supporting and feeding a log through the machine, a )lurality of cutters circularly disposed around the periphery of the log, a shaft for each cutter, a sleeve in which the said shaft is journaled, a motor secured to the said sleeve and connected to the said shaft, a second sleeve in which the aforesaid sleeve and its cutter shaft are longitudinally adjustable, means for determining and securing the aforesaid sleeve in position in the said second sleeve and means whereby the said second sleeve is pivotally mounted in the said frame so that the same together with the. first aforesaid sleeve, the cutter shaft and its cutter may be given a swinging movement transversely of thelog.

5. In a wood-bar ing machine and in combination, a frame, means for receiving, supporting and feeding a log through the machine, a plurality of cutters circularly disposed around the periphery of the log, a shaft for each cutter, a sleeve in which the said shaft is journaled,a motor secured to the said sleeve and connected to the said shaft, a second sleeve in which the aforesaid sleeve and its cutter shaft are longitudinally adjustable, an adjustable spring-link between the cutter shaft and the frame for uiding the said cutter shaft, means whereby the said second sleeve is pivotally mounted in the said frame so that the same together withthe first aforesaid sleeve, the cutter shaft and its cutter ma be given a swinging movement transverse y of the log, and means for forcing the said cutters against the peri hery o the log.

6. In a woo -bark1ng machine and in means for receiving,

combination, a frame,

a log through the supporting and feeding machine, a plurality o cutters, a shaft for each cutter, means for so mounting each cutter shaft and its cutter in the said frame that the said cutter shaft and its cutter are ad'ustable longitudinally and are also movable laterally of the log, means for maintainin the said cutters against the periphery o the log and means controlled by the aforesaid means for receivin supporting and feeding alog for adjusta 1y determining the tension under which the last aforesaid means operate.

7. In a wood-barking machine and in combination, a frame, means for receiving, supporting and feedin ,a log through the machine, a plurality of cutters, a shaft for each cutter, means for so mounting each cutter shaft and its cutter in the said frame that the said'cutter shaft and its cutter are ad'ustable longitudinally and'are also movable laterally of the log, a rin revolubly mounted in said frame, a plurality of springs each connecting one of the means in which a cutter shaft is mounted with the said ring, and means controlled by the said means for receiving, supporting and feeding a log for swinging the said ring to vary the tension under which the said springs act upon the said cutter shafts.

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

. GEORGE SPAAK. Witnesses HJALMAR ZE'ITERSTROM,

Ronun'r APELGREN.